12244220 has 24 divisors (see below), whose sum is σ = 25779600. Its totient is φ = 4884992.

The previous prime is 12244201. The next prime is 12244223. The reversal of 12244220 is 2244221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12716 + ... + 13644.

It is an arithmetic number, because the mean of its divisors is an integer number (1074150).

Almost surely, 2^12244220 is an apocalyptic number.

12244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12244220 is an abundant number, since it is smaller than the sum of its proper divisors (13535380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12244220 is a wasteful number, since it uses less digits than its factorization.

12244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 12244220 is about 3499.1741882907. The cubic root of 12244220 is about 230.4855526790.

Adding to 12244220 its reverse (2244221), we get a palindrome (14488441).

Subtracting from 12244220 its reverse (2244221), we obtain a palindrome (9999999).

The spelling of 12244220 in words is "twelve million, two hundred forty-four thousand, two hundred twenty".